| Mallat算法频率混叠原因及其改进模型 |
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| 引用本文： | 郭超峰,李梅莲.Mallat算法频率混叠原因及其改进模型[J].信阳师范学院学报(自然科学版),2007,20(4):511-514. |
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| 作者姓名： | 郭超峰 李梅莲 |
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| 作者单位： | 许昌学院,计算机科学与技术学院,河南,许昌,461000 |
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| 摘 要： | Mallat算法由于自身设计的原因,在信号分解过程中,存在频率混叠现象.在利用小波分析进行信号提取时,这种现象是一个不容忽视的问题.通过分析Mallat算法,找出了造成Mallat算法产生频率混叠的原因,给出了一个能有效消除频率混叠的改进算法模型.
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| 关 键 词： | 小波分析 Mallat算法 频率混叠 |
| 文章编号： | 1003-0972（2007）04-0511-04 |
| 收稿时间： | 2007-03-18 |
| 修稿时间： | 2007-06-25 |
Reason and Melioration Model of Generating Frequency Aliasing of Mallat Algorithm |
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| GUO Chao-feng,LI Mei-lian.Reason and Melioration Model of Generating Frequency Aliasing of Mallat Algorithm[J].Journal of Xinyang Teachers College(Natural Science Edition),2007,20(4):511-514. |
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| Authors: | GUO Chao-feng LI Mei-lian |
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| Abstract: | Because of the design of Mallat Algorithm,the phenomenon of frequency aliasing exists in the signal decomposition process.Based on research and analysis of Mallat algorithm,the reasons that Mallat algorithm generates frequency aliasing were found out,and an improved modle that can eliminate efficiently frequency aliasing was given. |
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| Keywords: | wavelet analysis Mallat algorithm frequency aliasing |
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